https://docs.oracle.com/javase/jp/21/docs/api/jdk.compiler/com/sun/source/tree/ModuleTree.ModuleKind.html
ModuleTree.ModuleKind (Java SE 21 & JDK 21)
declaration: module: jdk.compiler, package: com.sun.source.tree, interface: ModuleTree, enum: ModuleKind
java sejdk