CRA_Assembly.add_block
- CRA_Assembly.add_block(block, node=None, attr_dict=None, **kwattr)
 Add a block to the assembly.
- Parameters:
 - block
compas_assembly.datastructures.Block The block to add.
- nodehashable, optional
 The identifier of the corresponding node in the connectivity graph. If no value is provided, the identifier will be generated automatically by the graph.
- attr_dictdict, optional
 A dictionary of block attributes.
- **kwatrdict, optional
 Additional attributes in the form of named function parameters.
- block
 - Returns:
 - hashable
 The identifier of the node in the graph corresponding to the block.