void (@NotNull PsiPrefixExpression expression) { PsiExpression operand = expression.getOperand(); Boolean constBoolean = getConstBoolean(operand); if (constBoolean == null) return; IElementType tokenType = expression.getOperationTokenType(); if (JavaTokenType.EXCL == tokenType) { if (!markAndCheckCreateResult()) { return; } resultExpression = constBoolean.booleanValue() ? falseExpression : trueExpression; } }