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```python
# AI Dev Tool: NexusCore v1.0
# Description: FastAPI Pydantic v2 Micro-SaaS Boilerplate with Next.js Expo Monorepo Integration

from fastapi import FastAPI, HTTPException
from fastapi.responses import JSONResponse
from pydantic import BaseModel
from typing import Optional
import uvicorn
import logging

# Initialize FastAPI App
app = FastAPI(title="NexusCore", description="FastAPI Pydantic v2 Micro-SaaS Boilerplate")

# Define Pydantic Models
class User(BaseModel):
    """User Model"""
    id: int
    name: str
    email: str

class Location(BaseModel):
    """Location Model"""
    id: int
    city: str
    country: str

# Define API Endpoints
@app.get("/users/")
async def get_users():
    """
    Get all users
    """
    try:
        # Simulate database query
        users = [
            User(id=1, name="John Doe", email="john@example.com"),
            User(id=2, name="Jane Doe", email="jane@example.com")
        ]
        return JSONResponse(content=[user.dict() for user in users], media_type

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