(self, fieldname)
Returns the total number of terms in the given field. This is used
        by some scoring algorithms.
Returns the total number of terms in the given field. This is used
        by some scoring algorithms.
Returns the total number of terms in the given field . This is used by some scoring algorithms .
def field_length(self, fieldname):
        """Returns the total number of terms in the given field. This is used
        by some scoring algorithms.
        """
        raise NotImplementedError
def field_length ( self , fieldname ) : raise NotImplementedError