docs: def createManualIndex(self, indexName, indexClass):
          """Creates an index manually managed
          @params name: The index name
          @params indexClass: vertex or edge
  
          @returns The created Index"""
          indexClass = str(indexClass).lower()
          if indexClass == "vertex":
              index = self.neograph.nodes.indexes.create(indexName)
          elif indexClass == "edge":
              index = self.neograph.relationships.indexes.create(indexName)
          else:
              NameError("Unknown Index Class %s" % indexClass)
          return Index(indexName, indexClass, "manual", index)