https://openjdk.java.net/ 
public interface org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProvider extends org.graalvm.compiler.core.common.spi.ForeignCallsProvider
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.graalvm.compiler.hotspot.meta.HotSpotForeignCallsProvider
  super_class: java.lang.Object
{
  public abstract jdk.vm.ci.meta.Value[] getNativeABICallerSaveRegisters();
    descriptor: ()[Ljdk/vm/ci/meta/Value;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "HotSpotForeignCallsProvider.java"