https://docs.oracle.com/javase/jp/11/docs/api/java.base/java/util/function/ObjDoubleConsumer.html
ObjDoubleConsumer (Java SE 11 & JDK 11 )
java sejdk
https://developers.google.com/j2objc/javadoc/jre/reference/java/util/function/ObjDoubleConsumer
ObjDoubleConsumer | J2ObjC | Google for Developers
googledevelopers