langchain/embeddings/vertexai.py/VertexAIEmbeddings/embed_query
class VertexAIEmbeddings:    def embed_query(self, text: str) -> List[float]:
        """Embed a text.

        Args:
            text: The text to embed.

        Returns:
            Embedding for the text.
        """
        embeddings = self.client.get_embeddings([text])
        return embeddings[0].values