fields property
The fields that should be updated.
At least one field must be specified. The root paragraph_style is
implied and should not be specified. A single "*" can be used as
short-hand for listing every field. For example, to update the paragraph
style's alignment property, set fields to "alignment". To reset a
property to its default value, include its field name in the field mask
but leave the field itself unset.
Implementation
core.String? fields;