import fbx to mesh converter unity in csharp

main.cs
using UnityEditor;
using UnityEngine;

public class FbxToMeshConverter : MonoBehaviour
{
    public string filePath = "Assets/Models/mymodel.fbx";
    
    void Start()
    {
        // Load the FBX file
        GameObject obj = AssetDatabase.LoadAssetAtPath<GameObject>(filePath);

        // Get the mesh data from the FBX file
        Mesh mesh = null;

        // Find the mesh renderer component in the object hierarchy
        MeshRenderer renderer = obj.GetComponentInChildren<MeshRenderer>();

        // Get the mesh filter component attached to the mesh renderer
        MeshFilter filter = renderer.GetComponent<MeshFilter>();

        // Get the mesh data from the mesh filter component
        mesh = filter.sharedMesh;
        
        // Do something with the mesh
        if(mesh != null)
        {
            // Print the number of vertices in the mesh
            Debug.Log("Number of vertices: " + mesh.vertexCount);
        }
    }
}
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