docs: def _get_raw_specs(self, config):
          """
          This method extract only the "Validate.spec" from
          modules that were collected by ConfigReader._get_modules().
          And, this method append "Validate.spec" to raw_specs.
          This method creates a dictionary like the following:
          raw_specs = {
              'redis': (
                  "[redis]",
                  "host = string(default='127.0.0.1')",
                  "port = integer(0, 65535, default=6379)",
                  "db = integer(default=0)",
                  "charset = string(default='utf-8')",
                  "password = string(default=None)"
              ),
              ...
          }
  
          raw_specs is used by ConfigReader._create_specs().
          """
  
          # spec_name is hard-corded
          raw_specs = {}
          spec_name = 'Validator'
          modules = self._get_modules()
  
          for section, options in config.items():
  
              if section == 'global':
                  continue
  
              try:
                  name = options['module']
              except KeyError:
                  raise ConfigMissingValue(section, 'module')
  
              try:
                  spec = getattr(modules[name], spec_name)().spec
                  raw_specs[name] = spec
              except KeyError:
                  raise NotSupportedError(name)
  
          return raw_specs