AssetDatabase.CopyAsset
static function CopyAsset(path: string, newPath: string): bool;
static bool CopyAsset(string path, string newPath);
static def CopyAsset(path as string, newPath as string) as bool
Parameters

path Filesystem path of the source asset.
newPath Filesystem path of the new asset to create.
Description

Duplicates the asset at path and stores it at newPath.

All paths are relative to the project folder, for example: "AssetsMyTextureshello.png".