Embedded Image ac:style attribute being lost

Embedded images can track a css style attribute as described in the Storage Format definition here: https://confluence.atlassian.com/display/DOC/Confluence+Storage+Format#ConfluenceStorageFormat-Images

This attribute is lost when an image is being written using com.atlassian.confluence.content.render.xhtml.ImageAttributeWriter#writeAttributes(java.lang.String, java.lang.String, com.atlassian.confluence.xhtml.api.EmbeddedImage)