public interface IFoo {

	IBar getIBar();

	String getText();
}

public interface IBar {

	String getText();
}

public class Bar implements IFoo, IBar {

	public String getText() {
		return "hello";
	}

	public IBar getIBar() {
		return this;
	}
}

Safe-deleting the method {getString()} from {IFoo} will remove the implementation in {Bar} which is required for implementing {IBar}

Issue was resolved