Initialize a D1Object
## S4 method for signature 'D1Object' initialize(.Object, id, data, format, mnNodeId = as.character(NA))
.Object
: A D1Object instance.id
: The identifier for the objectdata
: An R object (data or metadata) that this D1Object contains.format
: The Object format.mnNodeId
: The DataONE node identifier associated with this object, i.e. "urn:node:KNB"D1Object
class description.