code: def getschemacls(self, resource, besteffort=True):
          
          result = None
  
          if hasattr(resource, 'mro') and besteffort and isclass(resource):
              resources = list(resource.mro())
  
          else:
              resources = [resource]
  
          for _resource in resources:
              if _resource in self._schemasbyresource:
                  result = self._schemasbyresource[_resource]
  
                  break
  
          return result
docs: Get schema class related to input resource.
  
          :param resource: resource from which get schema class.
          :param bool besteffort: if True (default) try a best effort in parsing
              the inheritance tree of resource if resource is a class.
          :rtype: type