// System.Linq.Expressions.Expression
[__DynamicallyInvokable]
public Expression ReduceAndCheck()
{
    if (!this.CanReduce)
    {
        throw Error.MustBeReducible();
    }
    Expression expression = this.Reduce();
    if (expression == null || expression == this)
    {
        throw Error.MustReduceToDifferent();
    }
    if (!TypeUtils.AreReferenceAssignable(this.Type, expression.Type))
    {
        throw Error.ReducedNotCompatible();
    }
    return expression;
}

// System.Linq.Expressions.Expression
[__DynamicallyInvokable]
public virtual Expression Reduce()
{
    if (this.CanReduce)
    {
        throw Error.ReducibleMustOverrideReduce();
    }
    return this;
}