class_docstr: trec data class for cls task.
class_docstr_tok: ["trec","data","class","for","cls","task","."]
code: def test_build(self):
      trec = TREC("trec")
      trec.build()
      self.assertTrue(trec.is_ready())
  
imports: from absl import logging
  import delta.compat
  from delta.data.datasets.trec import TREC
label_desc: Use image node_id 1 for calling the TRECTest obj's underlying member method code with example usage: obj.test_build() without return types