* commit '9a8df8054b2e38a27d8e8e6b17365979218f0e3f': docs: revise javadocs for sip add a package description, revise class descriptions and edit some method docs
* commit '9a8df8054b2e38a27d8e8e6b17365979218f0e3f': docs: revise javadocs for sip add a package description, revise class descriptions and edit some method docs