java-symbol-solver-core/src/main/java/com/github/javaparser/symbolsolver/javaparsermodel/contexts/LambdaExprContext.java
private int pos(MethodCallExpr callExpr, Expression param) {
        int i = 0;
        for (Expression p : callExpr.getArguments()) {
            if (p == param) {
                return i;
            }
            i++;
        }
        throw new IllegalArgumentException();
    }
private int pos(MethodCallExpr callExpr, Expression param) {
        int i = 0;
        for (Expression p : callExpr.getArguments()) {
            if (p == param) {
                return i;
            }
            i++;
        }
        throw new IllegalArgumentException();
    }
/