tree bdbda6628973fb3003b2a4026a311b88273bcb8e
parent 4516d16c76c7e25cf6fdcbc9f2f45d78804ee423
author Sijie Guo <sijie@apache.org> 1505433541 -0700
committer Sijie Guo <sijie@apache.org> 1505433541 -0700

private constructor