Display Last Comment in Wiki Rendered Styled Custom Field

import com.atlassian.jira.component.ComponentAccessor
import com.atlassian.jira.issue.RendererManager
import com.atlassian.jira.issue.fields.renderer.IssueRenderContext
import com.atlassian.jira.issue.fields.renderer.wiki.AtlassianWikiRenderer

def rendererManager = ComponentAccessor.getComponent(RendererManager)
def renderContext = new IssueRenderContext(issue)
def commentManager = ComponentAccessor.commentManager
def comment = commentManager.getLastComment(issue)

if (comment) {
    rendererManager.getRenderedContent(AtlassianWikiRenderer.RENDERER_TYPE, comment.body, renderContext)
}