fields property
The fields that should be updated.
At least one field must be specified. The root lineProperties is implied
and should not be specified. A single "*" can be used as short-hand for
listing every field. For example to update the line solid fill color, set
fields to "lineFill.solidFill.color". 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;