code: public AssemblyFiles getAssemblyFiles(ImageConfiguration imageConfig, MojoParameters mojoParameters)
          throws MojoExecutionException {
  
          String name = imageConfig.getName();
          try {
              return dockerAssemblyManager.getAssemblyFiles(name, imageConfig.getBuildConfiguration(), mojoParameters, log);
          } catch (InvalidAssemblerConfigurationException | ArchiveCreationException | AssemblyFormattingException e) {
              throw new MojoExecutionException("Cannot extract assembly files for image " + name + ": " + e, e);
          }
      }
docs: Get a mapping of original to destination files which a covered by an assembly. This can be used
  to watch the source files for changes in order to update the target (either by recreating a docker image
  or by copying it into a running container)
  
  @param imageConfig image config for which to get files. The build- and assembly configuration in this image
  config must not be null.
  @param mojoParameters needed for tracking the assembly
  @return mapping of assembly files
  @throws MojoExecutionException