in src/main/kotlin/com/intellij/ideolog/intentions/LogRemoveHighlightingsIntention.kt [19:26]
override fun isAvailable(project: Project, editor: Editor, psiFile: PsiFile?): Boolean {
if (psiFile?.fileType != LogFileType)
return false
val hasColumnHighlight = (editor.getUserData(highlightingUserKey) ?: -1) >= 0
val hasWordHighlight = editor.getUserData(highlightingSetUserKey)?.isNotEmpty() ?: false
return hasColumnHighlight || hasWordHighlight
}