new_contents: """Parse the biothings schema"""
  
  from .config import BIOTHINGS_SCHEMA_URL, PREFIX_TO_REMOVE
  from .utils.dataload import load_json_or_yaml
  from .utils.common import remove_prefix
  
  class SchemaParser():
      def __init__(self):
          self.schema_json = remove_prefix(load_json_or_yaml(BIOTHINGS_SCHEMA_URL),
                                           PREFIX_TO_REMOVE)
          self.properties = {}
          self.ids = []
          self.clses = []
          self.process_schema()
  
      def process_schema(self):
          for rec in self.schema_json['@graph']:
              if "rdfs:subPropertyOf" in rec and rec["rdfs:subPropertyOf"]["@id"] == "http://schema.org/identifier":
                  self.ids.append(rec["@id"])
              elif rec["@type"] == "rdf:Property":
                  self.properties[rec["@id"]] = {"inverse_property": None}
                  if "schema:inverseOf" in rec:
                      self.properties[rec["@id"]]["inverse_property"] = rec["schema:inverseOf"]["@id"]
              elif rec["@type"] == "rdfs:Class":
                  self.clses.append(rec["@id"])
  
subject: add parser for biothings schema