namespace System.Dynamic { public abstract class BindingRestrictions { public static readonly BindingRestrictions Empty; public static BindingRestrictions Combine(IList<DynamicMetaObject> contributingObjects); public static BindingRestrictions GetExpressionRestriction(Expression expression); public static BindingRestrictions GetInstanceRestriction(Expression expression, object instance); public static BindingRestrictions GetTypeRestriction(Expression expression, Type type); public BindingRestrictions Merge(BindingRestrictions restrictions); public Expression ToExpression(); } }