10. A device comprising: one or more processors; and memory coupled to the one or more processors configured to run a build file, generate, based on one or more annotations predefined in a folder, an index file as the build file is run, wherein the index file includes first and second strings, wherein the first string defines a key specifying an annotation, wherein the second string defines a value specifying a name of a category that is mapped to the annotation, wherein the folder is added as an indexed annotation, archive the index file with the mapped annotation and category, and look up, based on a given annotation, the index file to seek one or more classes associated with the given annotation.
10. A device comprising: one or more processors; and memory coupled to the one or more processors configured to run a build file, generate, based on one or more annotations predefined in a folder, an index file as the build file is run, wherein the index file includes first and second strings, wherein the first string defines a key specifying an annotation, wherein the second string defines a value specifying a name of a category that is mapped to the annotation, wherein the folder is added as an indexed annotation, archive the index file with the mapped annotation and category, and look up, based on a given annotation, the index file to seek one or more classes associated with the given annotation. 15. The device of claim 10 , wherein the build file is a Java file and a Java Archive file is used to archive the index file.