Parse successful
<?xml version="1.0" encoding="ISO-8859-1"?>
<Dataset xmlns="http://xml.opendap.org/ns/DAP/4.0#" xml:base="file:dap4/test_array_4.xml" dapVersion="4.0" dmrVersion="1.0" name="test_array_4">
    <Dimension name="row" size="3"/>
    <Dimension name="col" size="4"/>
    <Byte name="a">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </Byte>
    <Int16 name="b">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </Int16>
    <Int32 name="c">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </Int32>
    <UInt16 name="d">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </UInt16>
    <UInt32 name="e">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </UInt32>
    <Float32 name="f">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </Float32>
    <Float64 name="g">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </Float64>
    <String name="h">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </String>
    <URL name="i">
        <Dim name="/row"/>
        <Dim name="/col"/>
    </URL>
    <Int32 name="x">
        <Dim name="/row"/>
        <Dim size="5"/>
    </Int32>
    <Int32 name="y">
        <Dim size="5"/>
        <Dim name="/col"/>
    </Int32>
</Dataset>

<?xml version="1.0" encoding="ISO-8859-1"?>
<Dataset xmlns="http://xml.opendap.org/ns/DAP/4.0#" xml:base="file:dap4/test_array_4.xml" dapVersion="4.0" dmrVersion="1.0" name="test_array_4">
    <Dimension name="row" size="3"/>
    <Dimension name="col" size="4"/>
    <Byte name="a">
        <Dim name="/row"/>
        <Dim name="/col"/>
        <Attribute name="DAP4_Checksum_CRC32" type="String">
            <Value>bb99ff8a</Value>
        </Attribute>
    </Byte>
</Dataset>

The data:
{ {{255, 255, 255, 255},{255, 255, 255, 255},{255, 255, 255, 255}} }