elk-reasoner/src/main/java/org/semanticweb/elk/reasoner/stages/AbstractReasonerStage.java
boolean invalidate() {
		if (!isCompleted_ && !isInitialized_) {
			return false;
		}
		LOGGER_.trace("{}: invalidated", this);
		isCompleted_ = false;
		isInitialized_ = false;
		return true;
	}
boolean invalidate() {
		if (!isCompleted_ && !isInitialized_) {
			return false;
		}
		LOGGER_.trace("{}: invalidated", this);
		isCompleted_ = false;
		isInitialized_ = false;
		return true;
	}
boolean invalidate ( ) { if ( ! isCompleted_ && ! isInitialized_ ) { return false ; } LOGGER_ . trace ( "{}: invalidated" , this ) ; isCompleted_ = false ; isInitialized_ = false ; return true ; }
Marks this {@link AbstractReasonerStage} as not completed; this will
require its execution next time unless {@link #setCompleted()} is called

@return {@code true} if this stage was not invalidated and {@code false}
if this stage was already invalidated before the call
Marks this { @link AbstractReasonerStage } as not completed ; this will require its execution next time unless { @link #setCompleted () } is called