l2j-server-datapack/L2J_DataPack/dist/game/data/xsd/skillLearn.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
	<xs:element name="list">
		<xs:complexType>
			<xs:sequence minOccurs="1" maxOccurs="1">
				<xs:element name="npc" minOccurs="0" maxOccurs="unbounded">
					<xs:complexType>
						<xs:sequence minOccurs="1" maxOccurs="1">
							<xs:element name="classId" type="xs:nonNegativeInteger" minOccurs="1" maxOccurs="unbounded"></xs:element>
						</xs:sequence>
						<xs:attribute name="id" type="xs:positiveInteger" use="required"></xs:attribute>
					</xs:complexType>
				</xs:element>
			</xs:sequence>
		</xs:complexType>
	</xs:element>
</xs:schema>