Values:
SOLUTION_TYPE_UNSPECIFIED (0):
Default value.
SOLUTION_TYPE_RECOMMENDATION (1):
Used for Recommendations AI.
SOLUTION_TYPE_SEARCH (2):
Used for Discovery Search.
SOLUTION_TYPE_CHAT (3):
Used for use cases related to the Generative
AI agent.
SOLUTION_TYPE_GENERATIVE_CHAT (4):
Used for use cases related to the Generative Chat agent.
It's used for Generative chat engine only, the associated
data stores must enrolled with SOLUTION_TYPE_CHAT
solution.
