code: def get_salt(self, secure_code=""):
      return callBigDlFunc(
          self.bigdl_type, "psiGetSalt", self.value, secure_code
      )
  
file_path: BigDL/python/ppml/src/bigdl/ppml/fl/algorithms/psi.py
imports: from bigdl.ppml.fl import *
  from bigdl.dllib.utils.common import JavaValue
label_desc: Use image node_id 2 for calling the PSI obj's underlying member method code with example usage: obj.get_salt(secure_code) and returns: callBigDlFunc