Provide various options to control the behavior of BuildPipeline.BuildAssetBundles.
| bundleDefinitions | Array defining the name and contents of each AssetBundle. (optional) |
| extraScriptingDefines | User-specified preprocessor defines used while compiling assemblies during the AssetBundle build. (optional) |
| options | Flags from the BuildAssetBundleOptions enum. (optional) |
| outputPath | AssetBundle 的输出路径。 |
| subtarget | The subtarget to build. (optional) |
| targetPlatform | The BuildTarget to build. (optional) |