https://source.android.com/ 
public interface android.hardware.location.ContextHubManager$ICallback
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: android.hardware.location.ContextHubManager$ICallback
  super_class: java.lang.Object
{
  public abstract void onMessageReceipt(int, int, android.hardware.location.ContextHubMessage);
    descriptor: (IILandroid/hardware/location/ContextHubMessage;)V
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    MethodParameters:
               Name  Flags
      hubHandle      
      nanoAppHandle  
      message        
}
SourceFile: "ContextHubManager.java"
NestHost: android.hardware.location.ContextHubManager
InnerClasses:
  public abstract ICallback = android.hardware.location.ContextHubManager$ICallback of android.hardware.location.ContextHubManager
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()