property rights needed, if any. For example, if a third party
  patent license is required to allow Recipient to Distribute the
  Program, it is Recipient's responsibility to acquire that license
  before distributing the Program.

  d) Each Contributor represents that to its knowledge it has
  sufficient copyright rights in its Contribution, if any, to grant

pkg go/ast, type IfStmt struct
pkg go/ast, type IfStmt struct, Body *BlockStmt
pkg go/ast, type IfStmt struct, Cond Expr
pkg go/ast, type IfStmt struct, Else Stmt
pkg go/ast, type IfStmt struct, If token.Pos
pkg go/ast, type IfStmt struct, Init Stmt
pkg go/ast, type ImportSpec struct
pkg go/ast, type ImportSpec struct, Comment *CommentGroup
pkg go/ast, type ImportSpec struct, Doc *CommentGroup

pkg go/token, const GEQ = 46
pkg go/token, const GO = 72
pkg go/token, const GOTO = 73
pkg go/token, const GTR = 41
pkg go/token, const HighestPrec = 7
pkg go/token, const IDENT = 4
pkg go/token, const IF = 74
pkg go/token, const ILLEGAL = 0
pkg go/token, const IMAG = 7
pkg go/token, const IMPORT = 75
pkg go/token, const INC = 37
pkg go/token, const INT = 5
pkg go/token, const INTERFACE = 76