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```python
# AI Dev Tool: FastAPI Pydantic v2 Micro-SaaS Starter
# Description: Production-ready FastAPI starter boilerplate with Pydantic v2 for building micro-SaaS applications

from fastapi import FastAPI, HTTPException
from pydantic import BaseModel, Field
from typing import List, Optional
import uvicorn
import logging

# Initialize the FastAPI application
app = FastAPI(title="FastAPI Pydantic v2 Micro-SaaS Starter", description="Production-ready FastAPI starter boilerplate with Pydantic v2")

# Define a Pydantic model for the user
class User(BaseModel):
    """User model"""
    id: int = Field(..., description="User ID")
    name: str = Field(..., description="User name")
    email: str = Field(..., description="User email")

# Define a Pydantic model for the book
class Book(BaseModel):
    """Book model"""
    id: int = Field(..., description="Book ID")
    title: str = Field(..., description="Book title")
    author: str = Field(..., description="Book author")

# Define a route for getting all users
@app.get("/users/", response_model=List[

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