In `@meilisearch/index.py`:
- Around line 2608-2610: Remove the trailing whitespace after the statement that
initializes the request body (the line "body: Dict[str, Any] = {}") so the file
no longer contains an extra space at end-of-line; update the block around the
body/offset handling (the code referencing the variable body and the subsequent
if offset is not None) to ensure there are no trailing spaces on any lines.
- Around line 2553-2558: The parameter name 'filter' in get_fields is shadowing
the built-in and triggers pylint W0622; rename the parameter (e.g., to filter_
or filters) and update all internal references within the get_fields function
signature and body to the new name (preserving type Optional[MutableMapping[str,
Any]] and behavior), or if you prefer consistency with nearby methods add the
same local pylint disable used elsewhere instead of renaming; ensure only
get_fields and its internals are changed so the API remains non-breaking.

In `@tests/index/test_index.py`:
- Around line 350-371: The failing linter is due to trailing whitespace in the
new test block that exercises index.get_fields (variables: page1, page2,
limited); open the test_index.py test that contains the pagination assertions
for index.get_fields and remove any trailing spaces at the ends of the affected
lines (the lines with the page1/page2/limited assertions and surrounding
comments) so there are no trailing whitespace characters left, then save and
re-run linting.

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@meilisearch/index.py`:
- Line 2562: The parameter type for filter is declared as
Optional[MutableMapping[str, Any]] but the value is never mutated; change its
annotation to Optional[Mapping[str, Any]] to express read-only intent, update
any necessary imports to include Mapping from typing, and remove or adjust the
pylint disable comment if no longer needed; locate the parameter named "filter"
in meilisearch/index.py and replace MutableMapping with Mapping in that
function/method signature.