def add_highlight(self, hl_group, line, col_start=<NUM_LIT:0>,<EOL>col_end=-<NUM_LIT:1>, src_id=-<NUM_LIT:1>, async_=None,<EOL>**kwargs):
async_ = check_async(async_, kwargs, src_id != <NUM_LIT:0>)<EOL>return self.request('<STR_LIT>', src_id, hl_group,<EOL>line, col_start, col_end, async_=async_)<EOL>
Add a highlight to the buffer.