Reference.createAttribute

Reference createAttribute(hid_t locId,  string name,  string attrName,
                                       hid_t oapl =  H5P_DEFAULT)

Creates an attribute reference.

`locId`	Location identifier (file or group handle)
`name`	Path to the object containing the attribute
`attrName`	Name of the attribute to reference
`oapl`	Object access property list (default: H5P_DEFAULT)

A new Reference instance pointing to the attribute

HDF5Exception if reference creation fails