Move current object to its parents position

MoveParentObjectEditor.cs

using UnityEditor;
using UnityEngine;

[CustomEditor(typeof(Transform))]
public class MoveParentObjectEditor : Editor
{
    public override void OnInspectorGUI()
    {
        DrawDefaultInspector();

        if (GUILayout.Button("Move Parent to Current Object's Position"))
        {
            MoveParentToCurrentPosition();
        }
    }

    private void MoveParentToCurrentPosition()
    {
        Transform currentTransform = (Transform)target;

        if (currentTransform.parent == null)
        {
            Debug.LogWarning("The object doesn't have a parent to move.");
            return;
        }

        Vector3 parentPosition = currentTransform.parent.position;

        foreach (Transform child in currentTransform.parent)
        {
            if (child != currentTransform)
            {
                child.position = child.position - currentTransform.position + parentPosition;
            }
        }

        currentTransform.parent.position = currentTransform.position;
        currentTransform.localPosition = Vector3.zero;
    }
}