https://github.com/google/guava/guava: Guava is a suite of core and expanded libraries that include utility classes, google's collections, io classes, and much much more. 
public final class com.google.common.cache.CacheLoader$UnsupportedLoadingOperationException extends java.lang.UnsupportedOperationException
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: com.google.common.cache.CacheLoader$UnsupportedLoadingOperationException
  super_class: java.lang.UnsupportedOperationException
{
  void <init>();
    descriptor: ()V
    flags: (0x0000) 
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.google.common.cache.CacheLoader$UnsupportedLoadingOperationException this
         0: .line 238
            aload 0 /* this */
            invokespecial java.lang.UnsupportedOperationException.<init>:()V
            return
        end local 0 // com.google.common.cache.CacheLoader$UnsupportedLoadingOperationException this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/google/common/cache/CacheLoader$UnsupportedLoadingOperationException;
}
SourceFile: "CacheLoader.java"
NestHost: com.google.common.cache.CacheLoader
InnerClasses:
  public final UnsupportedLoadingOperationException = com.google.common.cache.CacheLoader$UnsupportedLoadingOperationException of com.google.common.cache.CacheLoader