ExistsBy doesn't acknowledge named parameters

[hmobius]

A call to _db.Users.ExistsByName("Foo").ToList(); is valid but a call to _db.Users.ExistsBy(Name: "Foo").ToList(); is not and returns an ArgumentException.

Suggest the following tests should pass.

In Simple.Data.SqlTest, QueryTest.cs

[Test]
public void ExistsByValidValueAsNamedParameterShouldReturnTrue()
{
   var db = DatabaseHelper.Open();
   Assert.AreEqual(true, db.Users.ExistsBy(Name: "Bob"));
}

[Test]
public void ExistsByInvalidValueAsNamedParameterShouldReturnFalse()
{
   var db = DatabaseHelper.Open();
   Assert.AreEqual(false, db.Users.ExistsBy(Name: "Peter Kay"));
}

In Simple.Data.InMemoryTest, InMemoryTests.cs

[Test]
public void ExistsByNameAsNamedParameterShouldReturnTrueForExistingData()
{
   // Arrange
   Database.UseMockAdapter(new InMemoryAdapter());
   var db = Database.Open();
   db.Users.Insert(Id: 1, Name: "Bob", Age: 30);

   // Act
   var bobExists = db.Users.ExistsBy(Name : "Bob");

   // Assert
   Assert.AreEqual(true, bobExists);
}

[Test]
public void ExistsByNameAsNamedParameterShouldReturnFalseForNonExistingData()
{
   // Arrange
   Database.UseMockAdapter(new InMemoryAdapter());
   var db = Database.Open();
   db.Users.Insert(Id: 1, Name: "Alice", Age: 30);

   // Act
   var bobExists = db.Users.ExistsBy(Name: "Bob");

   // Assert
   Assert.AreEqual(false, bobExists);
}

[markrendle]

Fixed.