code: public KerasModelBuilder modelYamlFilename(String modelYamlFilename) throws IOException {
          checkForExistence(modelYamlFilename);
          this.modelJson = new String(Files.readAllBytes(Paths.get(modelYamlFilename)));
          return this;
      }
docs: Set model architecture from file name pointing to model YAML string.
  
  @param modelYamlFilename Name of file containing model YAML string
  @return Model Builder
  @throws IOException I/O Exception