/// <summary>
/// Sets a new value for property {@link #getColumnsM columnsM}.
///
/// Number of columns for medium size.
///
/// When called with a value of <code>null</code> or <code>undefined</code>, the default value of the property will be restored.
///
/// Default value is <code>1</code>.
/// </summary>
/// <param name="sColumnsM">New value for property <code>columnsM</code></param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.layout.form.ColumnLayout setColumnsM(sap.ui.layout.form.ColumnsM sColumnsM);
/// <summary>
/// Sets a new value for property {@link #getColumnsM columnsM}.
///
/// Number of columns the <code>FormContainer</code> element uses if the <code>Form</code> control has medium size.
///
/// When called with a value of <code>null</code> or <code>undefined</code>, the default value of the property will be restored.
///
/// Default value is <code>1</code>.
/// </summary>
/// <param name="sColumnsM">New value for property <code>columnsM</code></param>
/// <returns>Reference to <code>this</code> in order to allow method chaining</returns>
public extern virtual sap.ui.layout.form.ColumnContainerData setColumnsM(sap.ui.layout.form.ColumnsM sColumnsM);
