code: def __call__(self, a):
      result = super().__call__(a)
      return KDTree(result.data)
  
file_path: mars/mars/learn/neighbors/_kd_tree.py
imports: from ...None import opcodes
  from ...utils import require_not_none
  from .tree import TreeObject, TreeBase, TreeQueryBase
label_desc: Use image node_id 1 for calling the _KDTree obj's underlying member method code with example usage: obj.__call__(a) and returns: KDTree