void (final @NotNull XmlTag tag, @NotNull ValidationHost host) { if (!isFromSchemaNs(tag)) return; final String nsPrefix = tag.getNamespacePrefix(); final XmlTag[] attrDeclTags = tag.findSubTags((nsPrefix.length() > 0 ? nsPrefix + ":" : "") + "attribute"); XmlUtil.doDuplicationCheckForElements( attrDeclTags, new HashMap<>(attrDeclTags.length), SCHEMA_ATTR_DUP_INFO_PROVIDER, host ); final XmlTag[] elementDeclTags = tag.findSubTags((nsPrefix.length() > 0 ? nsPrefix + ":" : "") + "element"); XmlUtil.doDuplicationCheckForElements( elementDeclTags, new HashMap<>(elementDeclTags.length), SCHEMA_ATTR_DUP_INFO_PROVIDER, host ); }