You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: h5_file_sdk.m
    path of file: ./repos/adinstruments_sdk_matlab/+adi
    
    the code of the file until where you have to start completion: classdef (Hidden) h5_file_sdk < adi.mat_file_sdk
    %
    %   Class:
    %   adi.h5_file_sdk
    %
    %   This should expose the SDK in a similar manner as the regular SDK
    %   but it should do it from a h5 file.
    %
    %   JAH 2014-6-15: This code layout will likely change although the 
    %   interface will most l
    
function file_h = openFile(file_path)
            %
            %   file = adi.h5_file_sdk.openFile(file_path)
            %
            %   NOTE: Only reading is supported.
            %
            %   Inputs:
            %   -------
            %   file_path : char
            %       Full path to the file.
            %
            %   Outputs:
            %   --------
            %   file : adi.h5_file_h
            
            file_h = adi.h5_file_h(file_path);
            
        end