def __init__(self, field_map):
self.lexers = {<EOL>field: get_lexer_by_name(language)<EOL>for field, language in field_map.items()<EOL>}<EOL>
Create a processor that syntax highlights code in the event values

        The syntax highlighting will use with ANSI terminal color codes.

        :param field_map: A mapping with field names mapped to languages, e.g.
                          ``{'body': 'json': 'soap_response': 'xml'}``