def _execCmd(self, cmd, args):
output = self._eslconn.api(cmd, args)<EOL>if output:<EOL><INDENT>body = output.getBody()<EOL>if body:<EOL><INDENT>return body.splitlines()<EOL><DEDENT><DEDENT>return None<EOL>
Execute command and return result body as list of lines.

            @param cmd:  Command string.
            @param args: Comand arguments string. 
            @return:     Result dictionary.