Checks whether this FieldPath is equal to the provided one.
the specified path.
Returns true if both points to the same field.
Get the path string pointing to the field.
Returns the path string.
StaticdocumentCreates a FieldPath instance for document ID.
A new FieldPath instance
to refer to the ID of a document
FieldPath - It is used to refer to a field in a document. The path can consist of one field name or can be a list of field names referring to nested fields in the document.