def _dump_has(self, service, grep, search):
dump_grep = self._dump(service, grep=grep)<EOL>if not dump_grep:<EOL><INDENT>return False<EOL><DEDENT>return dump_grep.strip().find(search) > -<NUM_LIT:1><EOL>
Check if a dump has particular content.

        :param service: Service to dump.
        :param grep: Grep for this string.
        :param search: Check for this substring.
        :returns: Found or not.