input: Write a function named `print_grade_table` that takes a list of dictionaries where each dictionary contains the keys 'name' and 'grade' representing the student's name and grade respectively. The function should print a formatted table with the names aligned to the left and grades right next to them. Each row in the table corresponds to a student, and there should be a header row with the titles 'Name' and 'Grade'. If the provided list is empty, the function should simply return without printing anything.
  
  
  assert print_grade_table([])==None
  assert print_grade_table([
      {'name': "John", 'grade': 92}
  ]) == None
  assert print_grade_table([
      {'name': "Alice", 'grade': 95},
      {'name': "Bob", 'grade': 87}
  ]) == None
  
output: def print_grade_table(students):
      if not students:
          return
      print(f"{'Name':<10} {'Grade':>5}")
      for student in students:
          print(f"{student['name']:<10} {student['grade']:>5}")