text: from openbiolink.edgeType import EdgeType
  from openbiolink.graph_creation.metadata_infile.infileMetadata import InfileMetadata
  from openbiolink.graph_creation.types.infileType import InfileType
  from openbiolink.namespace import *
  from openbiolink.nodeType import NodeType
  
  
  class InMetaEdgeStitchReaction(InfileMetadata):
      CSV_NAME = "DB_STITCH_drug_reaction_gene.csv"
      USE_COLS = ["item_id_a", "item_id_b", "score"]
      NODE1_COL = 0
      NODE2_COL = 1
      QSCORE_COL = 2
      SOURCE = "STITCH"
      NODE1_TYPE = NodeType.DRUG
      NODE1_NAMESPACE = Namespace(Namespaces.PUBCHEM, False)
      NODE2_TYPE = NodeType.GENE
      NODE2_NAMESPACE = Namespace(Namespaces.ENSEMBL, False, mapping={"9606.": ""})
      EDGE_TYPE = EdgeType.DRUG_REACTION_GENE
      INFILE_TYPE = InfileType.IN_EDGE_STITCH_REACTION
  
      MAPPING_SEP = None
  
      def __init__(self):
          super().__init__(
              csv_name=InMetaEdgeStitchReaction.CSV_NAME,
              cols=self.USE_COLS,
              infileType=InMetaEdgeStitchReaction.INFILE_TYPE,
          )
  