code: public String getRelationshipDefName(AtlasVertex entityVertex, AtlasEntityType entityType, String attributeName) {
          AtlasRelationshipDef relationshipDef = getRelationshipDef(entityVertex, entityType, attributeName);
  
          return (relationshipDef != null) ? relationshipDef.getName() : null;
      }
docs: Get relationshipDef name from entityType using relationship attribute.
  if more than one relationDefs are returned for an attribute.
  e.g. hive_column.table
  
  hive_table.columns       -> hive_column.table
  hive_table.partitionKeys -> hive_column.table
  
  resolve by comparing all incoming edges typename with relationDefs name returned for an attribute
  to pick the right relationshipDef name