A DESCRIPTION OF THE PROBLEM :
The section number 2, "Example Constant Pool" provides a description of the constant pool for the sample Java program. The description is inconsistent with what I see when I decompile generated Java byte codes using "javap -p -v -c".

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Based on my review of javap output, I would expect the "type" field to be as shown for my constant #84 (or some similar returned interface type that is specific to the targeted language's run-time):

Utf8 "()Ljava/util/function/BiFunction;"; // #84

Utf8 "+"; // #166

NameAndType #166 #84; // #236

InvokeDynamic 0s #234; // #236
ACTUAL -
The document says the constant pool should hold:

Utf8 "(Ljava/lang/Integer;Ljava/lang/Integer;)Ljava/lang/Integer;"; // #84

Utf8 "+"; // #166

NameAndType #166 #84; // #236

InvokeDynamic 0s #234; // #236

URL OF FAULTY DOCUMENTATION :
docs.oracle.com/javase/8/docs/technotes/guides/vm/multiple-language-support.html#challenges