void (@NotNull VirtualFile virtualFile, byte @NotNull [] bom) { virtualFile.setBOM(null); try { byte[] bytes = virtualFile.contentsToByteArray(); byte[] contentWithStrippedBom = Arrays.copyOfRange(bytes, bom.length, bytes.length); WriteAction.runAndWait(() -> virtualFile.setBinaryContent(contentWithStrippedBom)); } catch (IOException ex) { LOG.warn("Unexpected exception occurred on attempt to remove BOM from file " + virtualFile, ex); } }