The ASN.1 GeneralizedTime and UTCTime types are mapped to the XSD dateTime type.

ASN.1 production:

   TypeName ::= ASN1TimeStringType

in this definition, ASN1TimeStringType would be replaced with either GeneralizedTime or UTCTime.

Generated XSD code:

   <xsd:simpleType name="TypeName">
      <xsd:restriction base="xsd:dateTime"/>
   </xsd:simpleType>