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_2.xml" dapVersion="4.0" dmrVersion="1.0" name="test_array_2">
    <Int32 name="x">
        <Dim size="5"/>
        <Dim size="4"/>
    </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_2.xml" dapVersion="4.0" dmrVersion="1.0" name="test_array_2">
    <Int32 name="x">
        <Dim size="5"/>
        <Dim size="4"/>
    </Int32>
</Dataset>

The data:
{ {{123456789, 123456789, 123456789, 123456789},{123456789, 123456789, 123456789, 123456789},{123456789, 123456789, 123456789, 123456789},{123456789, 123456789, 123456789, 123456789},{123456789, 123456789, 123456789, 123456789}} }