(Unity) Modifies a Vector's component and returns it

VectorExtensions.cs

using UnityEngine;

public static class VectorExtensions
{
    /// <summary>
    /// Returns a modified version of the vector with one or more components modified
    /// </summary>
    /// <param name="x">X component to modify</param>
    /// <param name="y">Y component to modify</param>
    /// <returns>A modified version of the vector with the passed component configurations</returns>
    public static Vector2 Modify(this Vector2 point, float? x = null, float? y = null)
    {
        // transform.position = transform.position.Modify(y: 0)
        return new Vector2(x == null ? point.x : x.Value, y == null ? point.y : y.Value);
    }

    /// <summary>
    /// Get a modified version of the vector with one or more components modified
    /// </summary>
    /// <param name="x">X component to modify</param>
    /// <param name="y">Y component to modify</param>
    /// <param name="z">Z component to modify</param>
    /// <returns>A modified version of the vector with the passed component configurations</returns>
    public static Vector3 Modify(this Vector3 point, float? x = null, float? y = null, float? z = null)
    {
        // transform.position = transform.position.Modify(z: 0)
        return new Vector3(x == null ? point.x : x.Value, y == null ? point.y : y.Value, z == null ? point.z : z.Value);
    }

    /// <summary>
    /// Get a modified version of the vector with one or more components modified
    /// </summary>
    /// <param name="x">X component to modify</param>
    /// <param name="y">Y component to modify</param>
    /// <param name="z">Z component to modify</param>
    /// <param name="w">W component to modify</param>
    /// <returns>A modified version of the vector with the passed component configurations</returns>
    public static Vector4 Modify(this Vector4 point, float? x = null, float? y = null, float? z = null, float? w = null)
    {
        // transform.position = transform.position.Modify(w: 0)
        return new Vector4(x == null ? point.x : x.Value, 
            y == null ? point.y : y.Value,
            z == null ? point.z : z.Value, 
            w == null ? point.w : w.Value);
    }
}