System.Security.Principal.IdentityReference.IsValidTargetType C# (CSharp) Method

		public abstract bool IsValidTargetType (Type targetType);

 protected internal AuthorizationRule(System.Security.Principal.IdentityReference identity, int accessMask, bool isInherited, System.Security.AccessControl.InheritanceFlags inheritanceFlags, System.Security.AccessControl.PropagationFlags propagationFlags)
 {
     if (identity == null)
     {
         throw new ArgumentNullException("identity");
     }
     if (accessMask == 0)
     {
         throw new ArgumentException(Environment.GetResourceString("Argument_ArgumentZero"), "accessMask");
     }
     if ((inheritanceFlags < System.Security.AccessControl.InheritanceFlags.None) || (inheritanceFlags > (System.Security.AccessControl.InheritanceFlags.ObjectInherit | System.Security.AccessControl.InheritanceFlags.ContainerInherit)))
     {
         throw new ArgumentOutOfRangeException("inheritanceFlags", Environment.GetResourceString("Argument_InvalidEnumValue", new object[] { inheritanceFlags, "InheritanceFlags" }));
     }
     if ((propagationFlags < System.Security.AccessControl.PropagationFlags.None) || (propagationFlags > (System.Security.AccessControl.PropagationFlags.InheritOnly | System.Security.AccessControl.PropagationFlags.NoPropagateInherit)))
     {
         throw new ArgumentOutOfRangeException("propagationFlags", Environment.GetResourceString("Argument_InvalidEnumValue", new object[] { inheritanceFlags, "PropagationFlags" }));
     }
     if (!identity.IsValidTargetType(typeof(SecurityIdentifier)))
     {
         throw new ArgumentException(Environment.GetResourceString("Arg_MustBeIdentityReferenceType"), "identity");
     }
     this._identity         = identity;
     this._accessMask       = accessMask;
     this._isInherited      = isInherited;
     this._inheritanceFlags = inheritanceFlags;
     if (inheritanceFlags != System.Security.AccessControl.InheritanceFlags.None)
     {
         this._propagationFlags = propagationFlags;
     }
     else
     {
         this._propagationFlags = System.Security.AccessControl.PropagationFlags.None;
     }
 }