setter Signature
  JVM signature of the property setter, or null if this property has no setter or its signature is unknown.
Example: JvmMethodSignature("setX", "(Ljava/lang/Object;)V").
JVM signature of the property setter, or null if this property has no setter or its signature is unknown.
Example: JvmMethodSignature("setX", "(Ljava/lang/Object;)V").