code: def check_install_json(self):
          
          if self.install_json_schema is None:
              return
  
          contents = os.listdir(self.app_path)
          if self.args.install_json is not None:
              contents = [self.args.install_json]
  
          for install_json in sorted(contents):
              # skip files that are not install.json files
              if 'install.json' not in install_json:
                  continue
  
              error = None
              status = True
  
              try:
                  # loading explicitly here to keep all error catching in this file
                  with open(install_json) as fh:
                      data = json.loads(fh.read())
                  validate(data, self.install_json_schema)
              except SchemaError as e:
                  status = False
                  error = e
              except ValidationError as e:
                  status = False
                  error = e.message
              except ValueError:
                  # any JSON decode error will be caught during syntax validation
                  return
  
              if error:
                  # update validation data errors
                  self.validation_data['errors'].append(
                      'Schema validation failed for {} ({}).'.format(install_json, error)
                  )
  
              # update validation data for module
              self.validation_data['schema'].append({'filename': install_json, 'status': status})
docs: Check all install.json files for valid schema.