creates a new attribute containing the values from the first attribute which are not in the second attribute . the returned attribute will use the name and options taken from the first attribute . this method is logically equivalent to : subtract a1 , a2 , null ; concode_field_sep PlaceHolder placeHolder concode_field_sep AttributeType getAttributeType concode_elem_sep Attribute merge concode_elem_sep Attribute merge concode_elem_sep Attribute create concode_elem_sep Attribute create concode_elem_sep Attribute create concode_elem_sep Attribute create concode_elem_sep Attribute create concode_elem_sep Attribute create concode_elem_sep Attribute empty concode_elem_sep Attribute empty concode_elem_sep Attribute empty concode_elem_sep Attribute empty
Attribute function ( Attribute arg0 , Attribute arg1 ) { return subtract ( arg0 , arg1 , null ) ; }