Allow flexible generation params arg when checking pipeline specs (#37211)

* Allow flexible generation params arg

* Trigger tests

* Add docstring and rename js_generate to hub_generate

tests/test_pipeline_mixin.py

@@ -930,6 +930,11 @@ def parse_args_from_docstring_by_indentation(docstring):
 
 
 def compare_pipeline_args_to_hub_spec(pipeline_class, hub_spec):
+    """
+    Compares the docstring of a pipeline class to the fields of the matching Hub input signature class to ensure that
+    they match. This guarantees that Transformers pipelines can be used in inference without needing to manually
+    refactor or rename inputs.
+    """
     ALLOWED_TRANSFORMERS_ONLY_ARGS = ["timeout"]
 
     docstring = inspect.getdoc(pipeline_class.__call__).strip()
@@ -937,16 +942,20 @@ def compare_pipeline_args_to_hub_spec(pipeline_class, hub_spec):
     hub_args = set(get_arg_names_from_hub_spec(hub_spec))
 
     # Special casing: We allow the name of this arg to differ
-    js_generate_args = [js_arg for js_arg in hub_args if js_arg.startswith("generate")]
+    hub_generate_args = [
+        hub_arg for hub_arg in hub_args if hub_arg.startswith("generate") or hub_arg.startswith("generation")
+    ]
     docstring_generate_args = [
-        docstring_arg for docstring_arg in docstring_args if docstring_arg.startswith("generate")
+        docstring_arg
+        for docstring_arg in docstring_args
+        if docstring_arg.startswith("generate") or docstring_arg.startswith("generation")
     ]
     if (
-        len(js_generate_args) == 1
+        len(hub_generate_args) == 1
         and len(docstring_generate_args) == 1
-        and js_generate_args != docstring_generate_args
+        and hub_generate_args != docstring_generate_args
     ):
-        hub_args.remove(js_generate_args[0])
+        hub_args.remove(hub_generate_args[0])
         docstring_args.remove(docstring_generate_args[0])
 
     # Special casing 2: We permit some transformers-only arguments that don't affect pipeline output