Const Contact2DType
Contact2DType: object
BEGIN_CONTACT
BEGIN_CONTACT: string = "begin-contact"
END_CONTACT
END_CONTACT: string = "end-contact"
None
None: string = "none-contact"
POST_SOLVE
POST_SOLVE: string = "post-solve"
PRE_SOLVE
PRE_SOLVE: string = "pre-solve"