perf: lazily import the interactions API to speed up import google.genai#2701
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The top-level package eagerly imported the interactions submodule, and client.py eagerly imported the _gaos backend, so every `import google.genai` paid for hundreds of interactions-API modules even when the caller only uses generate_content. Defer both: make `interactions` a lazy module attribute via __getattr__, and move the _gaos imports in client.py under TYPE_CHECKING plus into the Client/AsyncClient properties that construct them. `from __future__ import annotations` keeps the property return annotations valid without the eager import. The _gaos modules now load only when .interactions/.agents/ .webhooks (or the nextgen client) are first accessed. PiperOrigin-RevId: 945816846
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perf: lazily import the interactions API to speed up import google.genai
The top-level package eagerly imported the interactions submodule, and
client.py eagerly imported the _gaos backend, so every
import google.genaipaid for hundreds of interactions-API modules even when thecaller only uses generate_content.
Defer both: make
interactionsa lazy module attribute via getattr,and move the _gaos imports in client.py under TYPE_CHECKING plus into the
Client/AsyncClient properties that construct them.
from __future__ import annotationskeeps the property return annotations valid without the eagerimport. The _gaos modules now load only when .interactions/.agents/
.webhooks (or the nextgen client) are first accessed.