| nameID | Property name ID, use Shader.PropertyToID to get it. | 
| name | Property name, e.g. "_SrcBlend". | 
| value | The desired lock state. | 
Sets the lock state of a property for this material.
If a property is locked by the material, any Material Variant inheriting from this Material will be unable to change the value of the property. Note that this method is Editor-only.
Additional resources: Material.GetPropertyLock, Material.IsPropertyLockedByAncestor.