question: void addAttributeValue ( String attribute , String value ) { if ( attribute . equals ( OMA_TYPE ) ) { mTypes . add ( value ) ; } else { mDescription . put ( attribute , value ) ; } }
target:  Inserts an attribute-value pair about the OMA content. If the attribute already exists, the new value will replace the old one. For MIME type, it will be appended to the existing MIME types.