boolean function ( ) { return content == null ; }
checks if the content model matches an empty input stream . the empty content is created using sgml dtd keyword empty . the empty model is a model with the content field equal to null . concode_field_sep ContentModel next concode_elem_sep int type concode_elem_sep long serialVersionUID concode_elem_sep Object content concode_field_sep void getElements concode_elem_sep String toString concode_elem_sep Element first concode_elem_sep boolean first