diff --git a/config/packages/flysystem.yaml b/config/packages/flysystem.yaml
index 6a57dde..4de704c 100644
--- a/config/packages/flysystem.yaml
+++ b/config/packages/flysystem.yaml
@@ -14,6 +14,18 @@ flysystem:
       options:
         directory: '%kernel.project_dir%/var/storage/fetch_failure'
 
+    # Source and destination storages of the FileFetchTask / RemoveFileTask demos
+    # (demo.flysystem.fetch_* / demo.flysystem.remove_*), emptied by each demo.
+    local.storage.fetch_source:
+      adapter: 'local'
+      options:
+        directory: '%kernel.project_dir%/var/storage/fetch_source'
+
+    local.storage.fetch_destination:
+      adapter: 'local'
+      options:
+        directory: '%kernel.project_dir%/var/storage/fetch_destination'
+
     remote.storage:
       adapter: 'sftp'
       options:
diff --git a/config/packages/process/demo.flysystem.fetch_missing_input.yaml b/config/packages/process/demo.flysystem.fetch_missing_input.yaml
new file mode 100644
index 0000000..bbd2d3d
--- /dev/null
+++ b/config/packages/process/demo.flysystem.fetch_missing_input.yaml
@@ -0,0 +1,49 @@
+clever_age_process:
+    configurations:
+        demo.flysystem.fetch_missing_input:
+            description: >
+                FileFetchTask receiving a missing file with ignore_missing: true, the default
+                (cleverage/flysystem-process-bundle#39): the missing file must be skipped, the other ones copied
+            help: >
+                Ex: bin/console cleverage:process:execute demo.flysystem.fetch_missing_input && ls var/storage/fetch_source var/storage/fetch_destination
+            tasks:
+                clean:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    description: Empty both storages
+                    options:
+                        output:
+                            - '%kernel.project_dir%/var/storage/fetch_source'
+                            - '%kernel.project_dir%/var/storage/fetch_destination'
+                    outputs: [ remove_storages ]
+
+                remove_storages:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileRemoverTask'
+                    outputs: [ content ]
+
+                content:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    options:
+                        output: 'Some data'
+                    outputs: [ write_0 ]
+
+                write_0:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/a.txt'
+                    outputs: [ inputs ]
+
+                inputs:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantIterableOutputTask'
+                    options:
+                        output: [ 'missing.txt', 'a.txt' ]
+                    outputs: [ task ]
+
+                task:
+                    service: '@CleverAge\FlysystemProcessBundle\Task\FileFetchTask'
+                    options:
+                        source_filesystem: 'local.storage.fetch_source'
+                        destination_filesystem: 'local.storage.fetch_destination'
+                    outputs: [ debug ]
+
+                debug:
+                    service: '@CleverAge\ProcessBundle\Task\Debug\DebugTask'
diff --git a/config/packages/process/demo.flysystem.fetch_multiple_inputs.yaml b/config/packages/process/demo.flysystem.fetch_multiple_inputs.yaml
new file mode 100644
index 0000000..0293fbd
--- /dev/null
+++ b/config/packages/process/demo.flysystem.fetch_multiple_inputs.yaml
@@ -0,0 +1,61 @@
+clever_age_process:
+    configurations:
+        demo.flysystem.fetch_multiple_inputs:
+            description: >
+                FileFetchTask receiving several file paths (cleverage/flysystem-process-bundle#38, #40): each input
+                must be copied, including a path received twice and a file named "0"
+            help: >
+                Ex: bin/console cleverage:process:execute demo.flysystem.fetch_multiple_inputs && ls var/storage/fetch_source var/storage/fetch_destination
+            tasks:
+                clean:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    description: Empty both storages
+                    options:
+                        output:
+                            - '%kernel.project_dir%/var/storage/fetch_source'
+                            - '%kernel.project_dir%/var/storage/fetch_destination'
+                    outputs: [ remove_storages ]
+
+                remove_storages:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileRemoverTask'
+                    outputs: [ content ]
+
+                content:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    options:
+                        output: 'Some data'
+                    outputs: [ write_0 ]
+
+                write_0:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/a.txt'
+                    outputs: [ write_1 ]
+
+                write_1:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/b.txt'
+                    outputs: [ write_2 ]
+
+                write_2:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/0'
+                    outputs: [ inputs ]
+
+                inputs:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantIterableOutputTask'
+                    options:
+                        output: [ 'a.txt', 'b.txt', 'a.txt', '0' ]
+                    outputs: [ task ]
+
+                task:
+                    service: '@CleverAge\FlysystemProcessBundle\Task\FileFetchTask'
+                    options:
+                        source_filesystem: 'local.storage.fetch_source'
+                        destination_filesystem: 'local.storage.fetch_destination'
+                    outputs: [ debug ]
+
+                debug:
+                    service: '@CleverAge\ProcessBundle\Task\Debug\DebugTask'
diff --git a/config/packages/process/demo.flysystem.fetch_pattern_multiple_inputs.yaml b/config/packages/process/demo.flysystem.fetch_pattern_multiple_inputs.yaml
new file mode 100644
index 0000000..80adec6
--- /dev/null
+++ b/config/packages/process/demo.flysystem.fetch_pattern_multiple_inputs.yaml
@@ -0,0 +1,56 @@
+clever_age_process:
+    configurations:
+        demo.flysystem.fetch_pattern_multiple_inputs:
+            description: >
+                FileFetchTask with file_pattern receiving several inputs (cleverage/flysystem-process-bundle#38): the
+                matching files must be copied for each input
+            help: >
+                Ex: bin/console cleverage:process:execute demo.flysystem.fetch_pattern_multiple_inputs && ls var/storage/fetch_source var/storage/fetch_destination
+            tasks:
+                clean:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    description: Empty both storages
+                    options:
+                        output:
+                            - '%kernel.project_dir%/var/storage/fetch_source'
+                            - '%kernel.project_dir%/var/storage/fetch_destination'
+                    outputs: [ remove_storages ]
+
+                remove_storages:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileRemoverTask'
+                    outputs: [ content ]
+
+                content:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    options:
+                        output: 'Some data'
+                    outputs: [ write_0 ]
+
+                write_0:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/a.txt'
+                    outputs: [ write_1 ]
+
+                write_1:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/b.txt'
+                    outputs: [ inputs ]
+
+                inputs:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantIterableOutputTask'
+                    options:
+                        output: [ 'first', 'second' ]
+                    outputs: [ task ]
+
+                task:
+                    service: '@CleverAge\FlysystemProcessBundle\Task\FileFetchTask'
+                    options:
+                        source_filesystem: 'local.storage.fetch_source'
+                        destination_filesystem: 'local.storage.fetch_destination'
+                        file_pattern: '/\.txt$/'
+                    outputs: [ debug ]
+
+                debug:
+                    service: '@CleverAge\ProcessBundle\Task\Debug\DebugTask'
diff --git a/config/packages/process/demo.flysystem.remove_files_input.yaml b/config/packages/process/demo.flysystem.remove_files_input.yaml
new file mode 100644
index 0000000..73e8e76
--- /dev/null
+++ b/config/packages/process/demo.flysystem.remove_files_input.yaml
@@ -0,0 +1,54 @@
+clever_age_process:
+    configurations:
+        demo.flysystem.remove_files_input:
+            description: >
+                RemoveFileTask receiving a list of paths (cleverage/flysystem-process-bundle#41): each file must be
+                deleted
+            help: >
+                Ex: bin/console cleverage:process:execute demo.flysystem.remove_files_input && ls var/storage/fetch_source var/storage/fetch_destination
+            tasks:
+                clean:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    description: Empty both storages
+                    options:
+                        output:
+                            - '%kernel.project_dir%/var/storage/fetch_source'
+                            - '%kernel.project_dir%/var/storage/fetch_destination'
+                    outputs: [ remove_storages ]
+
+                remove_storages:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileRemoverTask'
+                    outputs: [ content ]
+
+                content:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    options:
+                        output: 'Some data'
+                    outputs: [ write_0 ]
+
+                write_0:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/a.txt'
+                    outputs: [ write_1 ]
+
+                write_1:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/b.txt'
+                    outputs: [ inputs ]
+
+                inputs:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantIterableOutputTask'
+                    options:
+                        output: [ [ 'a.txt', 'b.txt' ] ]
+                    outputs: [ task ]
+
+                task:
+                    service: '@CleverAge\FlysystemProcessBundle\Task\RemoveFileTask'
+                    options:
+                        filesystem: 'local.storage.fetch_source'
+                    outputs: [ debug ]
+
+                debug:
+                    service: '@CleverAge\ProcessBundle\Task\Debug\DebugTask'
diff --git a/config/packages/process/demo.flysystem.remove_missing_file.yaml b/config/packages/process/demo.flysystem.remove_missing_file.yaml
new file mode 100644
index 0000000..6b8d8a9
--- /dev/null
+++ b/config/packages/process/demo.flysystem.remove_missing_file.yaml
@@ -0,0 +1,54 @@
+clever_age_process:
+    configurations:
+        demo.flysystem.remove_missing_file:
+            description: >
+                RemoveFileTask receiving a missing file and a directory (cleverage/flysystem-process-bundle#41):
+                run with -v, the missing file must not be logged as deleted
+            help: >
+                Ex: bin/console cleverage:process:execute demo.flysystem.remove_missing_file && ls var/storage/fetch_source var/storage/fetch_destination
+            tasks:
+                clean:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    description: Empty both storages
+                    options:
+                        output:
+                            - '%kernel.project_dir%/var/storage/fetch_source'
+                            - '%kernel.project_dir%/var/storage/fetch_destination'
+                    outputs: [ remove_storages ]
+
+                remove_storages:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileRemoverTask'
+                    outputs: [ content ]
+
+                content:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantOutputTask'
+                    options:
+                        output: 'Some data'
+                    outputs: [ write_0 ]
+
+                write_0:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/a.txt'
+                    outputs: [ write_1 ]
+
+                write_1:
+                    service: '@CleverAge\ProcessBundle\Task\File\FileWriterTask'
+                    options:
+                        filename: '%kernel.project_dir%/var/storage/fetch_source/dir/b.txt'
+                    outputs: [ inputs ]
+
+                inputs:
+                    service: '@CleverAge\ProcessBundle\Task\ConstantIterableOutputTask'
+                    options:
+                        output: [ 'a.txt', 'missing.txt', 'dir' ]
+                    outputs: [ task ]
+
+                task:
+                    service: '@CleverAge\FlysystemProcessBundle\Task\RemoveFileTask'
+                    options:
+                        filesystem: 'local.storage.fetch_source'
+                    outputs: [ debug ]
+
+                debug:
+                    service: '@CleverAge\ProcessBundle\Task\Debug\DebugTask'