SymlinkAction.input_path
The path of the input file of the action (i.e., the target of the symlink).
SymlinkAction.mnemonic
The mnemonic of the action.
SymlinkAction.output_path
The path of the output file of the action (i.e., the symlink itself).
SymlinkAction.target_label
The canonical label of the target this action belongs to.

