code: def with_initial_pipelines(
      self, initial_pipelines: Union[Pipeline, Sequence[Pipeline]]
  ):
      self.initial_population = initial_pipelines
      return self
  
imports: import platform
  from multiprocessing import set_start_method
  from pathlib import Path
  from typing import List, Optional, Sequence, Type, Union
  from golem.core.log import LoggerAdapter, default_log
  from golem.core.optimisers.genetic.gp_optimizer import EvoGraphOptimizer
  from golem.core.optimisers.genetic.gp_params import GPAlgorithmParameters
  from golem.core.optimisers.initial_graphs_generator import GenerationFunction, InitialPopulationGenerator
  from golem.core.optimisers.optimizer import AlgorithmParameters, GraphGenerationParams, GraphOptimizer
  from golem.utilities.data_structures import ensure_wrapped_in_sequence
  from fedot.core.caching.pipelines_cache import OperationsCache
  from fedot.core.caching.preprocessing_cache import PreprocessingCache
  from fedot.core.composer.composer import Composer
  from fedot.core.composer.gp_composer.gp_composer import GPComposer
  from fedot.core.optimisers.objective.metrics_objective import MetricsObjective
  from fedot.core.pipelines.pipeline import Pipeline
  from fedot.core.pipelines.pipeline_composer_requirements import PipelineComposerRequirements
  from fedot.core.pipelines.pipeline_graph_generation_params import get_pipeline_generation_params
  from fedot.core.pipelines.verification import rules_by_task
  from fedot.core.repository.operation_types_repository import get_operations_for_task
  from fedot.core.repository.metrics_repository import ComplexityMetricsEnum, MetricIDType, MetricsEnum
  from fedot.core.repository.tasks import Task
  from fedot.remote.remote_evaluator import RemoteEvaluator
  from fedot.utilities.define_metric_by_task import MetricByTask
label_desc: Use image node_id 8 for calling the ComposerBuilder obj's underlying member method code with example usage: obj.with_initial_pipelines(initial_pipelines) and returns: self