Function get_field_integer 

pub unsafe fn get_field_integer<T: for<'a> Follow<'a, Inner = T> + PrimInt + FromPrimitive>(
    table: &Table<'_>,
    field: &Field<'_>,
) -> FlatbufferResult<Option<T>>

Gets an integer table field given its exact type. Returns default integer value if the field is not set. Returns None if no default value is found. Returns error if the type size doesn’t match.

Safety

The value of the corresponding slot must have type T