invokedynamic was the first new Java bytecode since Java 1.0 and was crucial in implementing the "headline" features of Java 8 (such as lambdas and default methods). In this article, we take a ...

Instead, the first call bootstraps by invoking runtime logic that efficiently selects a target method, and subsequent calls typically invoke the target method without having to re-bootstrap.

There is a reason why Java method modifiers exist. If you call public methods internally and don't understand why, your developers could face major class issues.