Return a string to be printed in a GO term box.

def get_node_text(self, goid, goobj):
        """Return a string to be printed in a GO term box."""
        txt = []
        # Header line: "GO:0036464 L04 D06"
        txt.append(self.get_hdr(goid, goobj))
        # GO name line: "cytoplamic ribonucleoprotein"
        if 'no_name' not in self.present:
            txt.append(self._get_go_name(goobj))
        # study info line: "24 genes"
        if 'objgoea' in self.kws:
            study_txt = self.kws['objgoea'].get_study_txt(goid)
            if study_txt is not None:
                txt.append(study_txt)
        # Add user-specified text, if needed
        if 'go2txt' in self.kws and goid in self.kws['go2txt']:
            txt.append(self.kws['go2txt'][goid])
        return "\n".join(txt)