After testing different versions, it seems that Oracle has added this method to a small update u40. Versions below that do not have this method.
In JDK 1.8.0_40:
Compiled from "InterfaceType.java"
public interface com.sun.jdi.InterfaceType extends com.sun.jdi.ReferenceType {
public abstract java.util.List<com.sun.jdi.InterfaceType> superinterfaces();
public abstract java.util.List<com.sun.jdi.InterfaceType> subinterfaces();
public abstract java.util.List<com.sun.jdi.ClassType> implementors();
public com.sun.jdi.Value invokeMethod(com.sun.jdi.ThreadReference, com.sun.jdi.Method, java.util.List<? extends com.sun.jdi.Value>, int) throws com.sun.jdi.InvalidTypeException, com.sun.jdi.ClassNotLoadedException, com.sun.jdi.IncompatibleThreadStateException, com.sun.jdi.InvocationException;
}
, , . com.sun API Oracle .