code: def is_valid_geom(geom):
      """
      Checks to see if geometry is a valid GeoJSON geometry type or
      GeometryCollection.  Geometry must be GeoJSON or implement the geo
      interface.
  
      Geometries must be non-empty, and have at least x, y coordinates.
  
      Note: only the first coordinate is checked for validity.
  
      Parameters
      ----------
      geom: an object that implements the geo interface or GeoJSON-like object
  
      Returns
      -------
      bool: True if object is a valid GeoJSON geometry type
      """
  
      geom_types = {
          "Point",
          "MultiPoint",
          "LineString",
          "LinearRing",
          "MultiLineString",
          "Polygon",
          "MultiPolygon",
      }
  
      geom = getattr(geom, "__geo_interface__", None) or geom
  
      try:
          geom_type = geom["type"]
          if geom_type not in geom_types.union({"GeometryCollection"}):
              return False
  
      except (KeyError, TypeError):
          return False
  
      if geom_type in geom_types:
          if "coordinates" not in geom:
              return False
  
          coords = geom["coordinates"]
  
          if geom_type == "Point":
              # Points must have at least x, y
              return len(coords) >= 2
  
          if geom_type == "MultiPoint":
              # Multi points must have at least one point with at least x, y
              return len(coords) > 0 and len(coords[0]) >= 2
  
          if geom_type == "LineString":
              # Lines must have at least 2 coordinates and at least x, y for
              # a coordinate
              return len(coords) >= 2 and len(coords[0]) >= 2
  
          if geom_type == "LinearRing":
              # Rings must have at least 4 coordinates and at least x, y for
              # a coordinate
              return len(coords) >= 4 and len(coords[0]) >= 2
  
          if geom_type == "MultiLineString":
              # Multi lines must have at least one LineString
              return (
                  len(coords) > 0
                  and len(coords[0]) >= 2
                  and len(coords[0][0]) >= 2
              )
  
          if geom_type == "Polygon":
              # Polygons must have at least 1 ring, with at least 4 coordinates,
              # with at least x, y for a coordinate
              return (
                  len(coords) > 0
                  and len(coords[0]) >= 4
                  and len(coords[0][0]) >= 2
              )
  
          if geom_type == "MultiPolygon":
              # Muti polygons must have at least one Polygon
              return (
                  len(coords) > 0
                  and len(coords[0]) > 0
                  and len(coords[0][0]) >= 4
                  and len(coords[0][0][0]) >= 2
              )
  
      if geom_type == "GeometryCollection":
          if "geometries" not in geom:
              return False
  
          if not len(geom["geometries"]) > 0:
              # While technically valid according to GeoJSON spec, an empty
              # GeometryCollection will cause issues if used in rasterio
              return False
  
          for g in geom["geometries"]:
              if not is_valid_geom(g):
                  return False  # short-circuit and fail early
  
      return True
  
imports: import logging
  import math
  import os
  import warnings
  import numpy
  import rasterio
  from rasterio import warp
  from rasterio._base import DatasetBase
  from rasterio._features import _shapes, _sieve, _rasterize, _bounds
  from rasterio.enums import MergeAlg
  from rasterio.env import ensure_env, GDALVersion
  from rasterio.errors import ShapeSkipWarning
  from rasterio.rio.helpers import coords
  from rasterio.transform import Affine
  from rasterio.transform import IDENTITY, guard_transform
  from rasterio.windows import Window
label_desc: Use image node_id 7 for calling a global function with example usage: is_valid_geom(geom) and returns: True, False, False, False, unknown, unknown, unknown, unknown, unknown, unknown, unknown, False, False, False