code: def maxLength(validator, mL, instance, schema):
      if validator.is_type(instance, "string") and len(instance) > mL:
          yield ValidationError("%r is too long" % (instance,))
  
imports: import re
  from jsonschema._utils import ensure_list, equal, extras_msg, find_additional_properties, types_msg, unbool, uniq
  from jsonschema.exceptions import FormatError, ValidationError
  from jsonschema.compat import iteritems
label_desc: Use image node_id 19 for calling a global function with example usage: maxLength(validator, mL, instance, schema) without return types