This member is added by an implicit conversion from JavaTypeSignature to
any2stringadd[JavaTypeSignature] performed by method any2stringadd in scala.Predef.
This member is added by an implicit conversion from JavaTypeSignature to
StringFormat[JavaTypeSignature] performed by method StringFormat in scala.Predef.
Translation of "Signature" section from the JVM spec to Scala.
https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.7.9.1