InstructEmbeddings
Let's load the HuggingFace instruct Embeddings class.
from langchain.embeddings import HuggingFaceInstructEmbeddings
embeddings = HuggingFaceInstructEmbeddings(
    query_instruction="Represent the query for retrieval: "
)
    load INSTRUCTOR_Transformer
    max_seq_length  512
text = "This is a test document."
query_result = embeddings.embed_query(text)